//
//  OAutViewController.swift
//  新浪微博
//
//  Created by zero on 15/8/5.
//  Copyright © 2015年 zero. All rights reserved.
//

import UIKit
import SVProgressHUD
class OAutViewController: UIViewController,UIWebViewDelegate {

  
    
    // MARK: 搭建界面
    private lazy var webView = UIWebView()
    
    override func loadView() {
    view = webView
    webView.delegate = self
    
    title = "新浪微博"
    navigationItem.rightBarButtonItem = UIBarButtonItem(title: "关闭", style: UIBarButtonItemStyle.Plain, target: self, action: "close")
    }
    
    /// 关闭界面
    func close() {
    SVProgressHUD.dismiss()
    dismissViewControllerAnimated(true, completion: nil)
    }
    
    override func viewDidLoad() {
    super.viewDidLoad()
    
    // 加载授权页面
        
        
    webView.loadRequest(NSURLRequest(URL: NetWorkTools.sharedTools.oauthUrl()))
    
    }
    
    // MARK: - UIWebViewDelegate
    func webViewDidStartLoad(webView: UIWebView) {
    SVProgressHUD.show()
    }
    
    func webViewDidFinishLoad(webView: UIWebView) {
    SVProgressHUD.dismiss()
    }
    
    /**
    1. 如果请求的 URL 包含 回调地址，需要判断参数，否则继续加载
    2. 如果请求参数中，包含 code，可以从请求的 url 中获得请求码
    */
    func webView(webView: UIWebView, shouldStartLoadWithRequest request: NSURLRequest, navigationType: UIWebViewNavigationType) -> Bool {
    
    let urlString = request.URL!.absoluteString
    // 判断是否包含回调地址
    if !urlString.hasPrefix(NetWorkTools.sharedTools.redirectUri) {
    return true
    }
    
    print("判断参数")
    print(request.URL?.query)
    if let query = request.URL?.query where query.hasPrefix("code=") {
    print("获取授权码")
    // 从 query 中截取授权码
    let code = query.substringFromIndex(advance(query.startIndex, "code=".characters.count))
    print(code)
    // TODO: 换取 TOKEN
    loadAccessToken(code)
    } else {
    close()
    }
    
    return false
    }
    
    private func loadAccessToken(code: String) {
    NetWorkTools.sharedTools.loadAccessToken(code) {(result, error) -> () in
    if error != nil || result == nil {
        self.netError()

        return
    }
        
        
    
  
        UserAccount(dict: result!).loadUserInfo({ (error) -> () in
            if error != nil {
                self.netError()
                
                
                return
            }
            
            print("OK")
    })
    
  
    }
    
    }

    /// 网络出错处理
    private func netError() {
        SVProgressHUD.showInfoWithStatus("您的网络不给力")
        
        // 延时一段时间再关闭
        let when = dispatch_time(DISPATCH_TIME_NOW, Int64(1 * NSEC_PER_SEC))
        dispatch_after(when, dispatch_get_main_queue()) {
            self.close()
        }
    }
}





